You can say: Le vendredi costumé or Vendredi le jour du costume, wich is a more word to word translation . I would choose the first one.
this Friday is : 'ce vendredi' in French.
You spell it the same, 'un costume' (masc.)
Vendredi 13 is the French spelling for Friday the 13th. 13 is 'treize' in French.
Vendredi
un costume d'éléphant
le vendredi
des femmes costume
A Chanel suit is "un tailleur Chanel" in French.
c'est vendredi.
To say "Happy Friday" in French, you can say "Joyeux vendredi." Another common expression is "Bon vendredi." Both phrases convey a cheerful greeting for the end of the week.
heureux, c'est vendredi !
vendredi, sept mars